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openssl/ssl/s3_lib.c
Ralf S. Engelschall 15d21c2df4 Add a bunch of SSL_xxx() functions for configuring the temporary RSA and DH 
private keys and/or callback functions which directly correspond to their
SSL_CTX_xxx() counterparts but work on a per-connection basis. This is needed
for applications which have to configure certificates on a per-connection
basis (e.g. Apache+mod_ssl) instead of a per-context basis (e.g.
s_server).

For the RSA certificate situation is makes no difference, but for the DSA
certificate situation this fixes the "no shared cipher" problem where the
OpenSSL cipher selection procedure failed because the temporary keys were not
overtaken from the context and the API provided no way to reconfigure them.

The new functions now let applications reconfigure the stuff and they are in
detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback.  Additionally a new
non-public-API function ssl_cert_instantiate() is used as a helper function
and also to reduce code redundancy inside ssl_rsa.c.

Submitted by: Ralf S. Engelschall
Reviewed by: Ben Laurie
1999-02-25 14:40:29 +00:00

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/* ssl/s3_lib.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include "objects.h"
#include "ssl_locl.h"
char *ssl3_version_str="SSLv3 part of OpenSSL 0.9.2 31-Dec-1998";
#define SSL3_NUM_CIPHERS (sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))
#ifndef NOPROTO
static long ssl3_default_timeout(void );
#else
static long ssl3_default_timeout();
#endif
SSL_CIPHER ssl3_ciphers[]={
/* The RSA ciphers */
/* Cipher 01 */
{
1,
SSL3_TXT_RSA_NULL_MD5,
SSL3_CK_RSA_NULL_MD5,
SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 02 */
{
1,
SSL3_TXT_RSA_NULL_SHA,
SSL3_CK_RSA_NULL_SHA,
SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* anon DH */
/* Cipher 17 */
{
1,
SSL3_TXT_ADH_RC4_40_MD5,
SSL3_CK_ADH_RC4_40_MD5,
SSL_kEDH |SSL_aNULL|SSL_RC4 |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 18 */
{
1,
SSL3_TXT_ADH_RC4_128_MD5,
SSL3_CK_ADH_RC4_128_MD5,
SSL_kEDH |SSL_aNULL|SSL_RC4 |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 19 */
{
1,
SSL3_TXT_ADH_DES_40_CBC_SHA,
SSL3_CK_ADH_DES_40_CBC_SHA,
SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 1A */
{
1,
SSL3_TXT_ADH_DES_64_CBC_SHA,
SSL3_CK_ADH_DES_64_CBC_SHA,
SSL_kEDH |SSL_aNULL|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 1B */
{
1,
SSL3_TXT_ADH_DES_192_CBC_SHA,
SSL3_CK_ADH_DES_192_CBC_SHA,
SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* RSA again */
/* Cipher 03 */
{
1,
SSL3_TXT_RSA_RC4_40_MD5,
SSL3_CK_RSA_RC4_40_MD5,
SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 04 */
{
1,
SSL3_TXT_RSA_RC4_128_MD5,
SSL3_CK_RSA_RC4_128_MD5,
SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 05 */
{
1,
SSL3_TXT_RSA_RC4_128_SHA,
SSL3_CK_RSA_RC4_128_SHA,
SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 06 */
{
1,
SSL3_TXT_RSA_RC2_40_MD5,
SSL3_CK_RSA_RC2_40_MD5,
SSL_kRSA|SSL_aRSA|SSL_RC2 |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 07 */
{
1,
SSL3_TXT_RSA_IDEA_128_SHA,
SSL3_CK_RSA_IDEA_128_SHA,
SSL_kRSA|SSL_aRSA|SSL_IDEA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 08 */
{
1,
SSL3_TXT_RSA_DES_40_CBC_SHA,
SSL3_CK_RSA_DES_40_CBC_SHA,
SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 09 */
{
1,
SSL3_TXT_RSA_DES_64_CBC_SHA,
SSL3_CK_RSA_DES_64_CBC_SHA,
SSL_kRSA|SSL_aRSA|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 0A */
{
1,
SSL3_TXT_RSA_DES_192_CBC3_SHA,
SSL3_CK_RSA_DES_192_CBC3_SHA,
SSL_kRSA|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
0,
SSL_ALL_CIPHERS,
},
/* The DH ciphers */
/* Cipher 0B */
{
0,
SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
SSL3_CK_DH_DSS_DES_40_CBC_SHA,
SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 0C */
{
0,
SSL3_TXT_DH_DSS_DES_64_CBC_SHA,
SSL3_CK_DH_DSS_DES_64_CBC_SHA,
SSL_kDHd |SSL_aDH|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 0D */
{
0,
SSL3_TXT_DH_DSS_DES_192_CBC3_SHA,
SSL3_CK_DH_DSS_DES_192_CBC3_SHA,
SSL_kDHd |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 0E */
{
0,
SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
SSL3_CK_DH_RSA_DES_40_CBC_SHA,
SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 0F */
{
0,
SSL3_TXT_DH_RSA_DES_64_CBC_SHA,
SSL3_CK_DH_RSA_DES_64_CBC_SHA,
SSL_kDHr |SSL_aDH|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 10 */
{
0,
SSL3_TXT_DH_RSA_DES_192_CBC3_SHA,
SSL3_CK_DH_RSA_DES_192_CBC3_SHA,
SSL_kDHr |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
0,
SSL_ALL_CIPHERS,
},
/* The Ephemeral DH ciphers */
/* Cipher 11 */
{
1,
SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 12 */
{
1,
SSL3_TXT_EDH_DSS_DES_64_CBC_SHA,
SSL3_CK_EDH_DSS_DES_64_CBC_SHA,
SSL_kEDH|SSL_aDSS|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 13 */
{
1,
SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA,
SSL3_CK_EDH_DSS_DES_192_CBC3_SHA,
SSL_kEDH|SSL_aDSS|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 14 */
{
1,
SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 15 */
{
1,
SSL3_TXT_EDH_RSA_DES_64_CBC_SHA,
SSL3_CK_EDH_RSA_DES_64_CBC_SHA,
SSL_kEDH|SSL_aRSA|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 16 */
{
1,
SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA,
SSL3_CK_EDH_RSA_DES_192_CBC3_SHA,
SSL_kEDH|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
0,
SSL_ALL_CIPHERS,
},
/* Fortezza */
/* Cipher 1C */
{
0,
SSL3_TXT_FZA_DMS_NULL_SHA,
SSL3_CK_FZA_DMS_NULL_SHA,
SSL_kFZA|SSL_aFZA |SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 1D */
{
0,
SSL3_TXT_FZA_DMS_FZA_SHA,
SSL3_CK_FZA_DMS_FZA_SHA,
SSL_kFZA|SSL_aFZA |SSL_eFZA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* Cipher 1E */
{
0,
SSL3_TXT_FZA_DMS_RC4_SHA,
SSL3_CK_FZA_DMS_RC4_SHA,
SSL_kFZA|SSL_aFZA |SSL_RC4 |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
0,
SSL_ALL_CIPHERS,
},
/* New TLS Export CipherSuites */
/* Cipher 60 */
{
1,
TLS1_TXT_RSA_EXPORT56_WITH_RC4_56_MD5,
TLS1_CK_RSA_EXPORT56_WITH_RC4_56_MD5,
SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_EXP56|SSL_TLSV1,
0,
SSL_ALL_CIPHERS
},
/* Cipher 61 */
{
1,
TLS1_TXT_RSA_EXPORT56_WITH_RC2_CBC_56_MD5,
TLS1_CK_RSA_EXPORT56_WITH_RC2_CBC_56_MD5,
SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_EXP56|SSL_TLSV1,
0,
SSL_ALL_CIPHERS
},
/* Cipher 62 */
{
1,
TLS1_TXT_RSA_EXPORT56_WITH_DES_CBC_SHA,
TLS1_CK_RSA_EXPORT56_WITH_DES_CBC_SHA,
SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_EXP56|SSL_TLSV1,
0,
SSL_ALL_CIPHERS
},
/* end of list */
};
static SSL3_ENC_METHOD SSLv3_enc_data={
ssl3_enc,
ssl3_mac,
ssl3_setup_key_block,
ssl3_generate_master_secret,
ssl3_change_cipher_state,
ssl3_final_finish_mac,
MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
ssl3_cert_verify_mac,
SSL3_MD_CLIENT_FINISHED_CONST,4,
SSL3_MD_SERVER_FINISHED_CONST,4,
ssl3_alert_code,
};
static SSL_METHOD SSLv3_data= {
SSL3_VERSION,
ssl3_new,
ssl3_clear,
ssl3_free,
ssl_undefined_function,
ssl_undefined_function,
ssl3_read,
ssl3_peek,
ssl3_write,
ssl3_shutdown,
ssl3_renegotiate,
ssl3_renegotiate_check,
ssl3_ctrl,
ssl3_ctx_ctrl,
ssl3_get_cipher_by_char,
ssl3_put_cipher_by_char,
ssl3_pending,
ssl3_num_ciphers,
ssl3_get_cipher,
ssl_bad_method,
ssl3_default_timeout,
&SSLv3_enc_data,
};
static long ssl3_default_timeout()
{
/* 2 hours, the 24 hours mentioned in the SSLv3 spec
* is way too long for http, the cache would over fill */
return(60*60*2);
}
SSL_METHOD *sslv3_base_method()
{
return(&SSLv3_data);
}
int ssl3_num_ciphers()
{
return(SSL3_NUM_CIPHERS);
}
SSL_CIPHER *ssl3_get_cipher(u)
unsigned int u;
{
if (u < SSL3_NUM_CIPHERS)
return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
else
return(NULL);
}
/* The problem is that it may not be the correct record type */
int ssl3_pending(s)
SSL *s;
{
return(s->s3->rrec.length);
}
int ssl3_new(s)
SSL *s;
{
SSL3_CTX *s3;
if ((s3=(SSL3_CTX *)Malloc(sizeof(SSL3_CTX))) == NULL) goto err;
memset(s3,0,sizeof(SSL3_CTX));
s->s3=s3;
/*
s->s3->tmp.ca_names=NULL;
s->s3->tmp.key_block=NULL;
s->s3->tmp.key_block_length=0;
s->s3->rbuf.buf=NULL;
s->s3->wbuf.buf=NULL;
*/
s->method->ssl_clear(s);
return(1);
err:
return(0);
}
void ssl3_free(s)
SSL *s;
{
if(s == NULL)
return;
ssl3_cleanup_key_block(s);
if (s->s3->rbuf.buf != NULL)
Free(s->s3->rbuf.buf);
if (s->s3->wbuf.buf != NULL)
Free(s->s3->wbuf.buf);
if (s->s3->rrec.comp != NULL)
Free(s->s3->rrec.comp);
#ifndef NO_DH
if (s->s3->tmp.dh != NULL)
DH_free(s->s3->tmp.dh);
#endif
if (s->s3->tmp.ca_names != NULL)
sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
memset(s->s3,0,sizeof(SSL3_CTX));
Free(s->s3);
s->s3=NULL;
}
void ssl3_clear(s)
SSL *s;
{
unsigned char *rp,*wp;
ssl3_cleanup_key_block(s);
if (s->s3->tmp.ca_names != NULL)
sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
if (s->s3->rrec.comp != NULL)
{
Free(s->s3->rrec.comp);
s->s3->rrec.comp=NULL;
}
rp=s->s3->rbuf.buf;
wp=s->s3->wbuf.buf;
memset(s->s3,0,sizeof(SSL3_CTX));
if (rp != NULL) s->s3->rbuf.buf=rp;
if (wp != NULL) s->s3->wbuf.buf=wp;
ssl_free_wbio_buffer(s);
s->packet_length=0;
s->s3->renegotiate=0;
s->s3->total_renegotiations=0;
s->s3->num_renegotiations=0;
s->s3->in_read_app_data=0;
s->version=SSL3_VERSION;
}
long ssl3_ctrl(s,cmd,larg,parg)
SSL *s;
int cmd;
long larg;
char *parg;
{
int ret=0;
#if !defined(NO_DSA) || !defined(NO_RSA)
if (
#ifndef NO_RSA
cmd == SSL_CTRL_SET_TMP_RSA ||
cmd == SSL_CTRL_SET_TMP_RSA_CB ||
#endif
#ifndef NO_DSA
cmd == SSL_CTRL_SET_TMP_DH ||
cmd == SSL_CTRL_SET_TMP_DH_CB ||
#endif
0)
{
if (!ssl_cert_instantiate(&s->cert, s->ctx->default_cert))
{
SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
return(0);
}
}
#endif
switch (cmd)
{
case SSL_CTRL_GET_SESSION_REUSED:
ret=s->hit;
break;
case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
break;
case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
ret=s->s3->num_renegotiations;
break;
case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
ret=s->s3->num_renegotiations;
s->s3->num_renegotiations=0;
break;
case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
ret=s->s3->total_renegotiations;
break;
case SSL_CTRL_GET_FLAGS:
ret=(int)(s->s3->flags);
break;
#ifndef NO_RSA
case SSL_CTRL_NEED_TMP_RSA:
if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
(EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
ret = 1;
break;
case SSL_CTRL_SET_TMP_RSA:
{
RSA *rsa = (RSA *)parg;
if (rsa == NULL) {
SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
return(ret);
}
if ((rsa = RSAPrivateKey_dup(rsa)) == NULL) {
SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
return(ret);
}
if (s->cert->rsa_tmp != NULL)
RSA_free(s->cert->rsa_tmp);
s->cert->rsa_tmp = rsa;
ret = 1;
}
break;
case SSL_CTRL_SET_TMP_RSA_CB:
#ifndef NOPROTO
s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))parg;
#else
s->cert->rsa_tmp_cb = (RSA *(*)())parg;
#endif
break;
#endif
#ifndef NO_DH
case SSL_CTRL_SET_TMP_DH:
{
DH *dh = (DH *)parg;
if (dh == NULL) {
SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
return(ret);
}
if ((dh = DHparams_dup(dh)) == NULL) {
SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
return(ret);
}
if (!DH_generate_key(dh)) {
DH_free(dh);
SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
return(ret);
}
if (s->cert->dh_tmp != NULL)
DH_free(s->cert->dh_tmp);
s->cert->dh_tmp = dh;
ret = 1;
}
break;
case SSL_CTRL_SET_TMP_DH_CB:
#ifndef NOPROTO
s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))parg;
#else
s->cert->dh_tmp_cb = (DH *(*)())parg;
#endif
break;
#endif
default:
break;
}
return(ret);
}
long ssl3_ctx_ctrl(ctx,cmd,larg,parg)
SSL_CTX *ctx;
int cmd;
long larg;
char *parg;
{
CERT *cert;
cert=ctx->default_cert;
switch (cmd)
{
#ifndef NO_RSA
case SSL_CTRL_NEED_TMP_RSA:
if ( (cert->rsa_tmp == NULL) &&
((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
(EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
)
return(1);
else
return(0);
/* break; */
case SSL_CTRL_SET_TMP_RSA:
{
RSA *rsa;
int i;
rsa=(RSA *)parg;
i=1;
if (rsa == NULL)
i=0;
else
{
if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
i=0;
}
if (!i)
{
SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
return(0);
}
else
{
if (cert->rsa_tmp != NULL)
RSA_free(cert->rsa_tmp);
cert->rsa_tmp=rsa;
return(1);
}
}
/* break; */
case SSL_CTRL_SET_TMP_RSA_CB:
#ifndef NOPROTO
cert->rsa_tmp_cb=(RSA *(*)(SSL *, int, int))parg;
#else
cert->rsa_tmp_cb=(RSA *(*)())parg;
#endif
break;
#endif
#ifndef NO_DH
case SSL_CTRL_SET_TMP_DH:
{
DH *new=NULL,*dh;
int rret=0;
dh=(DH *)parg;
if ( ((new=DHparams_dup(dh)) == NULL) ||
(!DH_generate_key(new)))
{
SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
if (new != NULL) DH_free(new);
}
else
{
if (cert->dh_tmp != NULL)
DH_free(cert->dh_tmp);
cert->dh_tmp=new;
rret=1;
}
return(rret);
}
/*break; */
case SSL_CTRL_SET_TMP_DH_CB:
#ifndef NOPROTO
cert->dh_tmp_cb=(DH *(*)(SSL *, int, int))parg;
#else
cert->dh_tmp_cb=(DH *(*)())parg;
#endif
break;
#endif
/* A Thawte special :-) */
case SSL_CTRL_EXTRA_CHAIN_CERT:
if (ctx->extra_certs == NULL)
{
if ((ctx->extra_certs=sk_new_null()) == NULL)
return(0);
}
sk_push(ctx->extra_certs,(char *)parg);
break;
default:
return(0);
}
return(1);
}
/* This function needs to check if the ciphers required are actually
* available */
SSL_CIPHER *ssl3_get_cipher_by_char(p)
const unsigned char *p;
{
static int init=1;
static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
SSL_CIPHER c,*cp= &c,**cpp;
unsigned long id;
int i;
if (init)
{
init=0;
for (i=0; i<SSL3_NUM_CIPHERS; i++)
sorted[i]= &(ssl3_ciphers[i]);
qsort( (char *)sorted,
SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
FP_ICC ssl_cipher_ptr_id_cmp);
}
id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
c.id=id;
cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
(char *)sorted,
SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
(int (*)())ssl_cipher_ptr_id_cmp);
if ((cpp == NULL) || !(*cpp)->valid)
return(NULL);
else
return(*cpp);
}
int ssl3_put_cipher_by_char(c,p)
const SSL_CIPHER *c;
unsigned char *p;
{
long l;
if (p != NULL)
{
l=c->id;
if ((l & 0xff000000) != 0x03000000) return(0);
p[0]=((unsigned char)(l>> 8L))&0xFF;
p[1]=((unsigned char)(l ))&0xFF;
}
return(2);
}
int ssl3_part_read(s,i)
SSL *s;
int i;
{
s->rwstate=SSL_READING;
if (i < 0)
{
return(i);
}
else
{
s->init_num+=i;
return(0);
}
}
SSL_CIPHER *ssl3_choose_cipher(s,have,pref)
SSL *s;
STACK *have,*pref;
{
SSL_CIPHER *c,*ret=NULL;
int i,j,ok;
CERT *cert;
unsigned long alg,mask,emask;
/* Lets see which ciphers we can supported */
if (s->cert != NULL)
cert=s->cert;
else
cert=s->ctx->default_cert;
sk_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
for (i=0; i<sk_num(have); i++)
{
c=(SSL_CIPHER *)sk_value(have,i);
ssl_set_cert_masks(cert,c);
mask=cert->mask;
emask=cert->export_mask;
alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
if (SSL_IS_EXPORT(c->algorithms))
{
ok=((alg & emask) == alg)?1:0;
#ifdef CIPHER_DEBUG
printf("%d:[%08lX:%08lX]%s (export)\n",ok,alg,mask,c->name);
#endif
}
else
{
ok=((alg & mask) == alg)?1:0;
#ifdef CIPHER_DEBUG
printf("%d:[%08lX:%08lX]%s\n",ok,alg,mask,c->name);
#endif
}
if (!ok) continue;
j=sk_find(pref,(char *)c);
if (j >= 0)
{
ret=(SSL_CIPHER *)sk_value(pref,j);
break;
}
}
return(ret);
}
int ssl3_get_req_cert_type(s,p)
SSL *s;
unsigned char *p;
{
int ret=0;
unsigned long alg;
alg=s->s3->tmp.new_cipher->algorithms;
#ifndef NO_DH
if (alg & (SSL_kDHr|SSL_kEDH))
{
# ifndef NO_RSA
p[ret++]=SSL3_CT_RSA_FIXED_DH;
# endif
# ifndef NO_DSA
p[ret++]=SSL3_CT_DSS_FIXED_DH;
# endif
}
if ((s->version == SSL3_VERSION) &&
(alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
{
# ifndef NO_RSA
p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
# endif
# ifndef NO_DSA
p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
# endif
}
#endif /* !NO_DH */
#ifndef NO_RSA
p[ret++]=SSL3_CT_RSA_SIGN;
#endif
#ifndef NO_DSA
p[ret++]=SSL3_CT_DSS_SIGN;
#endif
return(ret);
}
int ssl3_shutdown(s)
SSL *s;
{
/* Don't do anything much if we have not done the handshake or
* we don't want to send messages :-) */
if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
{
s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
return(1);
}
if (!(s->shutdown & SSL_SENT_SHUTDOWN))
{
s->shutdown|=SSL_SENT_SHUTDOWN;
#if 1
ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
#endif
/* our shutdown alert has been sent now, and if it still needs
* to be written, s->s3->alert_dispatch will be true */
}
else if (s->s3->alert_dispatch)
{
/* resend it if not sent */
#if 1
ssl3_dispatch_alert(s);
#endif
}
else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
{
/* If we are waiting for a close from our peer, we are closed */
ssl3_read_bytes(s,0,NULL,0);
}
if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
!s->s3->alert_dispatch)
return(1);
else
return(0);
}
int ssl3_write(s,buf,len)
SSL *s;
const char *buf;
int len;
{
int ret,n;
#if 0
if (s->shutdown & SSL_SEND_SHUTDOWN)
{
s->rwstate=SSL_NOTHING;
return(0);
}
#endif
clear_sys_error();
if (s->s3->renegotiate) ssl3_renegotiate_check(s);
/* This is an experimental flag that sends the
* last handshake message in the same packet as the first
* use data - used to see if it helps the TCP protocol during
* session-id reuse */
/* The second test is because the buffer may have been removed */
if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
{
/* First time through, we write into the buffer */
if (s->s3->delay_buf_pop_ret == 0)
{
ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
(char *)buf,len);
if (ret <= 0) return(ret);
s->s3->delay_buf_pop_ret=ret;
}
s->rwstate=SSL_WRITING;
n=BIO_flush(s->wbio);
if (n <= 0) return(n);
s->rwstate=SSL_NOTHING;
/* We have flushed the buffer, so remove it */
ssl_free_wbio_buffer(s);
s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
ret=s->s3->delay_buf_pop_ret;
s->s3->delay_buf_pop_ret=0;
}
else
{
ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
(char *)buf,len);
if (ret <= 0) return(ret);
}
return(ret);
}
int ssl3_read(s,buf,len)
SSL *s;
char *buf;
int len;
{
int ret;
clear_sys_error();
if (s->s3->renegotiate) ssl3_renegotiate_check(s);
s->s3->in_read_app_data=1;
ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
if ((ret == -1) && (s->s3->in_read_app_data == 0))
{
ERR_get_error(); /* clear the error */
s->s3->in_read_app_data=0;
s->in_handshake++;
ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
s->in_handshake--;
}
else
s->s3->in_read_app_data=0;
return(ret);
}
int ssl3_peek(s,buf,len)
SSL *s;
char *buf;
int len;
{
SSL3_RECORD *rr;
int n;
rr= &(s->s3->rrec);
if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
{
n=ssl3_read(s,buf,1);
if (n <= 0) return(n);
rr->length++;
rr->off--;
}
if ((unsigned int)len > rr->length)
n=rr->length;
else
n=len;
memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
return(n);
}
int ssl3_renegotiate(s)
SSL *s;
{
if (s->handshake_func == NULL)
return(1);
if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
return(0);
s->s3->renegotiate=1;
return(1);
}
int ssl3_renegotiate_check(s)
SSL *s;
{
int ret=0;
if (s->s3->renegotiate)
{
if ( (s->s3->rbuf.left == 0) &&
(s->s3->wbuf.left == 0) &&
!SSL_in_init(s))
{
/*
if we are the server, and we have sent a 'RENEGOTIATE' message, we
need to go to SSL_ST_ACCEPT.
*/
/* SSL_ST_ACCEPT */
s->state=SSL_ST_RENEGOTIATE;
s->s3->renegotiate=0;
s->s3->num_renegotiations++;
s->s3->total_renegotiations++;
ret=1;
}
}
return(ret);
}
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